Pacific Island Ecosystems at Risk (PIER)

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Paspalum setaceum
Michx., Poaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: bullgrass, hairy bead grass, thin paspalum

Habit:  grass

Description:  "Culms slender, erect, usually 30 to 50 cm tall; sheaths pilose; blades rather firm, erect or nearly so, linear, about 10 to 12 cm long, 2 to 6 mm wide, densely pilose on both surfaces and papillose-ciliate on the margin; racemes on slender peduncles, solitary or sometimes 2, arching, 5 to 7 cm long; spikelets elliptic-obovate, about 1.5 mm long, glabrous or minutely pubescent"  (Hitchcock, 1935; p. 584). "Grass with a solitary inflorescence branch on the rachis and bearing round, flattened spikelets" (Whistler, 1988; p. 55).

Description from GrassBase.

Habitat/ecology:  In American Samoa, "common in lawns in the Tafuna Housing Area of Tutuila)" (Whistler, 1988; p. 55). "Common in Micronesia" (Whistler, 1988; p. 55).

Propagation:  Seed

Native range:  US, Mexico (Hitchcock, 1935; p. 584).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
American Samoa
Manu‘a Islands
Ta‘u Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2002) (voucher ID: PTBG 38850)
Taxon name on voucher: Paspalum setaceum Michx.
American Samoa
Tutuila Islands
Tutuila Island   Whistler, W. A. (1988) (p. 55)
Voucher cited: Whistler 4987
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Rota Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 55)
Var. ciliatifolium (Michx.) Vasey
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Rota Island introduced
invasive
Fosberg, F. R./Sachet, M.-H. (1982) (p. 84)
Var. ciliatifolium (Michx.) Vasey; vouchers cited: Fosberg & Moore 58241 (US, BISH, POM, NY, L), Raulerson 1493 (US, GUAM)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Saipan Island introduced
Raulerson, L. (2006) (p. 11)
Var. ciliatifolium (Michx.) Vasey
Federated States of Micronesia
Kosrae Island
Kosrae Island introduced
invasive
Josekutty, P. C./Wakuk, E. E./Joseph, M. J. (2002) (p. 63)
Guam
Guam Island
Guam Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 55)
Var. ciliatifolium (Michx.) Vasey
Guam
Guam Island
Guam Island introduced
invasive
Fosberg, F. R./Sachet, M.-H. (1982) (p. 84)
Var. ciliatifolium (Michx.) Vasey; vouchers cited: Fosberg 59816 (US, BISH), Fosberg 59636 (US,BISH, L), Fosberg & Evans 46207 (US, BISH, MO, NY, A, CANB, UC), Fosberg 46223 (US, BISH, POM, MO, L, K, BRI), Fosberg 43497 (US, BISIH, POM, TI, P, BM)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Oppenheimer, Hank (2007) (p. 29)
East Maui. Voucher cited: Oppenheimer & G. Hansen H90403 (BISH, PTBG)
Kiribati
Tungaru (Gilbert) Islands
Tarawa Atoll introduced
invasive
Space, James C./Imada, Clyde T. (2004) (p. 74)
var. ciliatifolium (Michx.) Vasey. Voucher: Imada 2003-24 (BISH 697639)
Marshall Islands
Ralik Chain
Bikini (Pikinni) Atoll introduced
Fosberg, F. R. (1988) (p. 11)
Marshall Islands
Ralik Chain
Jaluit (Jãlwõj) Atoll introduced
Fosberg, F. Raymond (1990) (p. 34)
Marshall Islands
Ralik Chain
Kili (Kõle) Atoll introduced
invasive
Vander Velde, Nancy/Vander Velde, Brian (2006) (p. 4)
"Common to abundant; major component of grassy fields, in ruderal areas, around houses".
Marshall Islands
Ralik Chain
Kwajalein (Kuwajleen) Atoll introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 55)
Marshall Islands
Ralik Chain
Kwajalein (Kuwajleen) Atoll introduced
invasive
Whistler, W. A./Steele, O. (1999) (pp. 87-88)
Vouchers cited: Fosberg 36641, Fosberg 39488, Fosberg 48025, Fosberg 48045, Herbst 8889, Herbst 8953, Herbst 9006, Herbst 9021, Whistler 11182
Marshall Islands
Ralik Chain
Kwajalein (Kuwajleen) Atoll introduced
invasive
Fosberg, F. R./Sachet, M.-H. (1982) (p. 84)
Var. ciliatifolium (Michx.) Vasey; vouchers cited: Fosberg 36641 (US, BISH, POM), Fosberg 39488 (US, BISH), Fosberg 48025 (US, BISH, POM, NY, L), Fosberg 48045 (US, BISH, CANB, MO, POM)
Marshall Islands
Ralik Chain
Kwajalein (Kuwajleen) Atoll introduced
invasive
Fosberg, F. R. (1959) (p. 2)
Voucher cited: Fosberg 36641 (US)
Marshall Islands
Ralik Chain
Kwajalein (Kuwajleen) Atoll   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1998) (voucher ID: PTBG 43967)
Taxon name on voucher: Paspalum setaceum Michx.
Marshall Islands
Ratak Chain
Arno Atoll introduced
invasive
Vander Velde, Nancy/Vander Velde, Brian (2007) (p. 3)
"Abundant; lawns and ruderal areas".
Marshall Islands
Ratak Chain
Majuro (Mãjro) Atoll introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 55)
Marshall Islands
Ratak Chain
Majuro (Mãjro) Atoll introduced
invasive
Vander Velde, Nancy (2003) (p. 52)
Marshall Islands
Ratak Chain
Majuro (Mãjro) Atoll introduced
invasive
Fosberg, F. R./Sachet, M.-H. (1982) (p. 84)
Var. ciliatifolium (Michx.) Vasey; voucher cited: Fosberg 58815 (US)
Marshall Islands
Ratak Chain
Maloelap Atoll   Imada, Clyde (2006)
var. ciliatiflolium (Michx.) Vasey
Marshall Islands
Ratak Chain
Mili (Mile) Atoll introduced
invasive
Vander Velde, Nancy/Vander Velde, Brian (2010) (p. A7)
Abundant, runway and most grassy areas on Mili, Tokewa.
Marshall Islands
Ratak Chain
Wotje (Wõjjã) Atoll introduced
Vander Velde, Nancy/Vander Velde, Brian (2009) (p. 1)
Voucher cited: Vander Velde 0513200919
Palau
Palau (Belau ) (main island group)
Peleliu (Beliliou) Island   Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
United States (other Pacific offshore islands)
Midway Atoll
Midway Atoll introduced
invasive
Starr, Forest/Martz, Kim (2000) (pp. 11-12)
Voucher cited: Starr & Martz 990622-1 (BISH)
United States (other Pacific offshore islands)
Midway Atoll
Sand Island introduced
invasive
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-11)
United States (other Pacific offshore islands)
Palmyra Atoll
Palmyra Atoll   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1995) (voucher ID: PTBG 38253)
Taxon name on voucher: Paspalum setaceum Michx.
United States (other Pacific offshore islands)
Wake Islands
Wake Island   Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Costa Rica
Costa Rica
Costa Rica (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
El Salvador
El Salvador
El Salvador (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Honduras
Honduras
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Nicaragua
Nicaragua
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Panama
Panama
Panama (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
British Indian Ocean Territory
Chagos Archipelago
Diego Garcia Island introduced
invasive
Whistler, W. Arthur (1996) (p. 25)


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This page was created on 1 JAN 1999 and was last updated on 30 NOV 2008.